Pokeberry
Grown in various American states such as Maine and Florida, these purple-black berries are popular amongst birds. Humans, on the other hand, have to beware of these fruits
ElderberriesThe elderberry fruits grow on small bush plants and can be edible when fully-ripened. Eating the bark, leaves, roots, and unripe berries will make you nauseous and develop severe stomach aches.
Yellow Star Fruit
It contains high amounts of oxalates that makes it dangerous for people with kidney issues. Overeating of it could cause kidney damage, seizures, and even death
RhubarbOxalic acid, which can harm the kidneys, is present in high concentrations in the leaves. Consuming a lot of these leaves can result in a variety of health issues, including nausea, vomiting, severe breathing difficulties, and even death.
Manchineel
This tree may resemble that of an apple tree, but its fruits and leaves produce a deadly toxin that can cause great suffering.
Sea Buckthorn BerriesThe orange-colored berries of this plant may look appealing, but they are very toxic and should, under no circumstances, be eaten.
Winterberry This shrub species may be beneficial for wildlife food, but it is considered too poisonous for humans to eat. The bright red fruit is eaten by small mammals and more than 48 species of birds.
PeachesWhile it is unlikely swallowing a few of these seeds will poison you, the ingestion should still be avoided. So don't use the pit of a peach on a regular consumption basis.
JatrophaYou can find these trees in all corners of the world with tropical or sub-tropical climates. Unfortunately, there have been high cases of children being poisoned by the fruit in different parts of India.
Desert Gourd
Resembling a watermelon vine, the desert gourd bears small, hard fruits with sour pulp. They are spheric shaped and five to ten cm in diameter. They are considered too poisonous to eat.